Just as a side note, I didn't breed the mare and I quickly got her to the point of having her back legs handled easily. Same as my mare - they just don't like it which is a big fat too bad in my books. Zierra just always jerks her back leg up very quickly, and then will try to suck it into her tummy. It was just very very peculiar to me that a mare could be born with such a quirk and still have it after 12 years of having her legs handled daily.
Excellent point though PaintedFury, sometimes it's not just temperament alone we should be considering when breeding, but other "quirks" - Zierra has a completely docile temperament on the ground, a kid could handle her, but then start handling her back legs or ears and she can get squirrelly. Most people wouldn't think twice about breeding her temperament on, but will those quirks get compounded into actual issues down the line if we continue breeding the offspring? Very intriguing!